Single women in their 20s and 30s did the least housework, about 12 weekly hours, while married women in their 60s and 70s did the most - about 21 hours a week.

• 研究发现，二三十岁的单身女性做的家务活最少，每周做家务的时间约为12个小时，六七十岁的已婚女性做的家务活最多，每周约为21个小时。